<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.11"/>
<title>Clause: src/jieba/include/cppjieba/PreFilter.hpp 源文件</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
  $(document).ready(function() { init_search(); });
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr style="height: 56px;">
  <td id="projectalign" style="padding-left: 0.5em;">
   <div id="projectname">Clause
   &#160;<span id="projectnumber">1.0</span>
   </div>
   <div id="projectbrief">Chatopera Language Understanding Service.</div>
  </td>
 </tr>
 </tbody>
</table>
</div>
<!-- end header part -->
<!-- 制作者 Doxygen 1.8.11 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "search",false,'搜索');
</script>
  <div id="navrow1" class="tabs">
    <ul class="tablist">
      <li><a href="index.html"><span>首页</span></a></li>
      <li><a href="pages.html"><span>相关页面</span></a></li>
      <li><a href="modules.html"><span>模块</span></a></li>
      <li><a href="namespaces.html"><span>命名空间</span></a></li>
      <li><a href="annotated.html"><span>类</span></a></li>
      <li class="current"><a href="files.html"><span>文件</span></a></li>
      <li>
        <div id="MSearchBox" class="MSearchBoxInactive">
        <span class="left">
          <img id="MSearchSelect" src="search/mag_sel.png"
               onmouseover="return searchBox.OnSearchSelectShow()"
               onmouseout="return searchBox.OnSearchSelectHide()"
               alt=""/>
          <input type="text" id="MSearchField" value="搜索" accesskey="S"
               onfocus="searchBox.OnSearchFieldFocus(true)" 
               onblur="searchBox.OnSearchFieldFocus(false)" 
               onkeyup="searchBox.OnSearchFieldChange(event)"/>
          </span><span class="right">
            <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
          </span>
        </div>
      </li>
    </ul>
  </div>
  <div id="navrow2" class="tabs2">
    <ul class="tablist">
      <li><a href="files.html"><span>文件列表</span></a></li>
    </ul>
  </div>
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
     onmouseover="return searchBox.OnSearchSelectShow()"
     onmouseout="return searchBox.OnSearchSelectHide()"
     onkeydown="return searchBox.OnSearchSelectKey(event)">
</div>

<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0" 
        name="MSearchResults" id="MSearchResults">
</iframe>
</div>

<div id="nav-path" class="navpath">
  <ul>
<li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li><li class="navelem"><a class="el" href="dir_fbdfadbb744c948350505e8738791e4e.html">jieba</a></li><li class="navelem"><a class="el" href="dir_efc4309f5a371b59161bd01663dd64b9.html">include</a></li><li class="navelem"><a class="el" href="dir_c6353e5563b4d99e51ccecd6b6f775d1.html">cppjieba</a></li>  </ul>
</div>
</div><!-- top -->
<div class="header">
  <div class="headertitle">
<div class="title">PreFilter.hpp</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="preprocessor">#ifndef CPPJIEBA_PRE_FILTER_H</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="preprocessor">#define CPPJIEBA_PRE_FILTER_H</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;</div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="preprocessor">#include &quot;Trie.hpp&quot;</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;</div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="preprocessor">#include &quot;glog/logging.h&quot;</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;</div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacecppjieba.html">cppjieba</a> {</div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;</div><div class="line"><a name="l00010"></a><span class="lineno"><a class="line" href="classcppjieba_1_1PreFilter.html">   10</a></span>&#160;<span class="keyword">class </span><a class="code" href="classcppjieba_1_1PreFilter.html">PreFilter</a> {</div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160; <span class="keyword">public</span>:</div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;  <span class="comment">//TODO use WordRange instead of Range</span></div><div class="line"><a name="l00013"></a><span class="lineno"><a class="line" href="structcppjieba_1_1PreFilter_1_1Range.html">   13</a></span>&#160;  <span class="keyword">struct </span><a class="code" href="structcppjieba_1_1PreFilter_1_1Range.html">Range</a> {</div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;    RuneStrArray::const_iterator begin;</div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;    RuneStrArray::const_iterator end;</div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;  }; <span class="comment">// struct Range</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;</div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;  <a class="code" href="classcppjieba_1_1PreFilter.html">PreFilter</a>(<span class="keyword">const</span> unordered_set&lt;Rune&gt;&amp; symbols,</div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">string</span>&amp; sentence)</div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;    : symbols_(symbols) {</div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;    <span class="keywordflow">if</span> (!DecodeRunesInString(sentence, sentence_)) {</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;      VLOG(2) &lt;&lt; <span class="stringliteral">&quot;decode failed. &quot;</span>;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;    }</div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;    cursor_ = sentence_.begin();</div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;  }</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;  ~<a class="code" href="classcppjieba_1_1PreFilter.html">PreFilter</a>() {</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;  }</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;  <span class="keywordtype">bool</span> HasNext()<span class="keyword"> const </span>{</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    <span class="keywordflow">return</span> cursor_ != sentence_.end();</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;  }</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;  <a class="code" href="structcppjieba_1_1PreFilter_1_1Range.html">Range</a> Next() {</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    <a class="code" href="structcppjieba_1_1PreFilter_1_1Range.html">Range</a> range;</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    range.begin = cursor_;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <span class="keywordflow">while</span> (cursor_ != sentence_.end()) {</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;      <span class="keywordflow">if</span> (IsIn(symbols_, cursor_-&gt;rune)) {</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;        <span class="keywordflow">if</span> (range.begin == cursor_) {</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;          cursor_ ++;</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;        }</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;        range.end = cursor_;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;        <span class="keywordflow">return</span> range;</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;      }</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;      cursor_ ++;</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    }</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    range.end = sentence_.end();</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    <span class="keywordflow">return</span> range;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;  }</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160; <span class="keyword">private</span>:</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;  RuneStrArray::const_iterator cursor_;</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;  <a class="code" href="classlimonp_1_1LocalVector.html">RuneStrArray</a> sentence_;</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;  <span class="keyword">const</span> unordered_set&lt;Rune&gt;&amp; symbols_;</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;}; <span class="comment">// class PreFilter</span></div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;} <span class="comment">// namespace cppjieba</span></div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="preprocessor">#endif // CPPJIEBA_PRE_FILTER_H</span></div><div class="ttc" id="structcppjieba_1_1PreFilter_1_1Range_html"><div class="ttname"><a href="structcppjieba_1_1PreFilter_1_1Range.html">cppjieba::PreFilter::Range</a></div><div class="ttdef"><b>Definition:</b> PreFilter.hpp:13</div></div>
<div class="ttc" id="classlimonp_1_1LocalVector_html"><div class="ttname"><a href="classlimonp_1_1LocalVector.html">limonp::LocalVector&lt; struct RuneStr &gt;</a></div></div>
<div class="ttc" id="namespacecppjieba_html"><div class="ttname"><a href="namespacecppjieba.html">cppjieba</a></div><div class="ttdef"><b>Definition:</b> DictTrie.hpp:18</div></div>
<div class="ttc" id="classcppjieba_1_1PreFilter_html"><div class="ttname"><a href="classcppjieba_1_1PreFilter.html">cppjieba::PreFilter</a></div><div class="ttdef"><b>Definition:</b> PreFilter.hpp:10</div></div>
</div><!-- fragment --></div><!-- contents -->
<address class="footer">
    <small>
        &nbsp; Copyright (c) (2019-2020) &nbsp;<a href="https://www.chatopera.com">
            北京华夏春松科技有限公司
        </a>. All Rights Reserved
        &nbsp;
    </small>
</address>